age: age in years
sex: (1 = male; 0 = female)
cp: chest pain type (1: typical angina, 2: atypical angina, 3: non-anginal pain, 4: asymptomatic)
trestbps: resting blood pressure (in mm Hg on admission to the hospital)
chol: serum cholestoral in mg/dl
fbs: (fasting blood sugar > 120 mg/dl) (1: true; 0: false)
restecg: resting electrocardiographic results (0: normal, 1: having abnormality, 2 = showing ventricular hypertrophy)
thalach: maximum heart rate achieved
exang: exercise induced angina (1: yes, 0: no)
oldpeak: ST depression induced by exercise relative to rest
slope: the slope of the peak exercise ST segment (1: upsloping, 2: flat, 3: downsloping)
ca: number of major vessels (0-3) colored by flourosopy
thal: thalassemia(a blood disorder) (3 = normal; 6 = fixed defect; 7 = reversable defect)
target: heart disease (0: no, 1: yes)